pyridine

As a noun pyridine

is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between pyridine and null

is that pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n while null is zero, nil; the cardinal number before einn.

In organic compound terms the difference between thiophene and pyridine

is that thiophene is any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and an sulphur atom; especially the simplest one, C₄H₄S while pyridine is any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C₅H₅N.

In organic compound|lang=en terms the difference between pyrimidine and pyridine

is that pyrimidine is (organic compound) a diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in dna and rna, thymine, uracil and cytosine while pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n.

As nouns the difference between pyrimidine and pyridine

is that pyrimidine is (organic compound) a diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in dna and rna, thymine, uracil and cytosine while pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n.

As nouns the difference between pyrrole and pyridine

is that pyrrole is any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and a nitrogen atom; especially the simplest one, C₄H₅N while pyridine is any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C₅H₅N.

As nouns the difference between taxonomy and pyridine

is that taxonomy is the science or the technique used to make a classification while pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n.

As nouns the difference between pyridine and cespitine

is that pyridine is any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C₅H₅N while cespitine is an oil obtained by distillation of peat, containing various members of the pyridine series.

In organic compound|lang=en terms the difference between pyridine and parvoline

is that pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n while parvoline is (organic compound) any of the series of isometric substances of which parvoline is the type.

As nouns the difference between pyridine and parvoline

is that pyridine is (organic compound) any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, c₅h₅n while parvoline is (organic compound) a base of the pyridine group, found in coal tar.

In organic compound terms the difference between pyridine and glutazine

is that pyridine is any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C₅H₅N while glutazine is a nitrogenous substance derived from pyridine.